operational relay的用法和样例：
例句
- I need to buy car relay ,please and contact us.
我们需要求购汽车继电器，请联系我们。 - Only one relay is closed at any time.
在某一时间，仅有一个继电器是闭合的。
operational relay的相关资料：
临近单词
operational use
operational
operational risk management
operational characteristics
operational standardization
Operational Needs Statement
operational system analysis
operational guiding thought
operational decision scheme
Operational Control Command
Operational Digital Network
operational reference model
